4 results about "Glycerol dehydration" patented technology

The utility model relates to the technical field of glycerol dehydration, and discloses efficient glycerol dehydration equipment which comprises a tank body and a heating jacket, the heating jacket is fixedly arranged on the surface of the tank body, the top of the tank body is fixedly communicated with a feeding pipe, and the bottom of the tank body is fixedly communicated with a discharging pipe; through the arrangement of the transmission mechanism, glycerol can be put into the tank body from the feeding pipe, then the tank body is heated through the heating sleeve, water contained in the glycerol can generate water vapor after the glycerol is heated, meanwhile, a motor is started, the motor drives a first transmission wheel to rotate, and the glycerol is heated through the heating sleeve. A first transmission wheel drives a second transmission wheel to rotate through a belt, the second transmission wheel rotates, a stirring rod synchronously rotates along with the second transmission wheel, the stirring rod drives a square frame to rotate, and glycerol forms a vortex through stirring, so that the contact area of the glycerol and air is increased, and formation of water vapor is promoted; and the glycerol dehydration effect is further improved.

A method of producing acrolein from glycerol is disclosed. The method may include introducing a heterogenous acid catalyst into a reactor. The heterogenous acid catalyst may be a heteropoly acid catalyst or a sulfonic acid catalyst. The heterogenous acid catalyst may be heated to a target reaction temperature while in the reactor. In some cases, the heterogenous acid catalyst may be preheated in the reactor before being heated to the target reaction temperature. Once the heterogenous acid catalyst reaches the target reaction temperature, glycerol may be introduced into the reactor to contact the heterogenous acid catalyst. Contact of the glycerol with the heterogenous acid catalyst causes a reaction that dehydrates the glycerol in the reactor and produces an acrolein-containing effluent. The effluent may be discharged from the reactor and may be subjected to further downstream processing, including converting the acrolein into acrylic acid.

The application provides a preparation method of dry biological tissue, which comprises the following steps: cleaning the biological tissue; cross-linking the cleaned biological tissue; and dehydrating the cross-linked biological tissue, wherein the dehydrating agent in the dehydrating process is selected from one or more than two of the following substances: alcohol ether with high boiling point and low crystallization point, alcohol amine with high boiling point and low crystallization point, alcohol ether solution with high boiling point and low crystallization point, and alcohol amine solution with high boiling point and low crystallization point. Compared with traditional glycerol dehydration or freeze-drying dehydration, the alcohol ether or alcohol amine dehydrating agent with high boiling point and low crystallization point can remove the calcification sites such as phospholipids in the biological tissue in the dehydration process, further improve the anti-calcification performance of the dry biological tissue, and can also give the dry tissue a wider storage temperature condition.

The invention relates to a pervaporation membrane, a device and a process for crude glycerine dehydration. The pervaporation membrane comprises a hollow fiber support body and a selection layer arranged on the outer surface of the hollow fiber support body, and the selection layer comprises chitosan and 3-8 wt% of nano silicon dioxide according to the weight of the selection layer. The pervaporation membrane can significantly improve the water flux and the separation coefficient. The crude glycerine dehydration device comprising the pervaporation membrane has an integrated design of pretreatment, membrane separation and online cleaning, solves the problem of membrane pollution, and can realize continuous and stable operation.